/*
 * Copyright 2008 Nordic Consulting & Development Company
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package pl.ncdc.web.login.client.ui;

import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.Widget;


/**
 * Displays notification messages and busy indicator.
 * <p>
 * Created on Apr 17, 2008
 *
 * @author hshsce
 * @version $Id: NotificationAreaWidget.java 71 2008-05-05 09:42:33Z hshsce $
 */
public class NotificationAreaWidget extends Composite {

	public static final String WIDGET_ID = "ncdc-web-login-NotificationAreaWidget";

	interface Style {

		String MESSAGE = "Message";

		String BUSY = "Busy";

	}

	private final SimplePanel m_panel = new SimplePanel();

	private final Label m_messageLabel = new Label();

	private final Label m_busyLabel = new Label();

	public NotificationAreaWidget() {
		m_messageLabel.setStyleName(Style.MESSAGE);
		m_busyLabel.setStyleName(Style.BUSY);
		initWidget(m_panel);
		setStyleName(WIDGET_ID);
	}

	public void setMessage(final String message) {
		m_messageLabel.setText(message);
		m_panel.setWidget(m_messageLabel);
	}

	public void setBusy() {
		m_panel.setWidget(m_busyLabel);
	}

	public void clear() {
		final Widget widget = m_panel.getWidget();
		if (widget != null) {
			widget.removeFromParent();
		}
	}

}
